diff --git a/socket/handlers/matchmaking.js b/socket/handlers/matchmaking.js
index a1be977..f12a53e 100644
--- a/socket/handlers/matchmaking.js
+++ b/socket/handlers/matchmaking.js
@@ -43,11 +43,15 @@ module.exports = function(io, socket, gameState) {
             socket.join(roomId);
             gameState.socketRooms.set(socket.id, roomId);
 
+            // 흑백 여부 결정 50% 확률
+            let isHostFirst = Math.random() < 0.5;
+
             // 클라이언트에게 방 정보 전송 (상대 급수 정보 포함)
             socket.emit('joinRoom', {
                 roomId: roomId,
                 opponentRating: gameState.playerRating.get(matchedRoom.hostId),
                 opponentNickname: gameState.nickname.get(matchedRoom.hostId),
+                isBlack: !isHostFirst
             });
 
             // 상대방에게 게임 시작 알림 (내 닉네임과 급수 정보 포함)
@@ -55,6 +59,7 @@ module.exports = function(io, socket, gameState) {
                 opponentId: socket.id,
                 opponentRating: playerRating,
                 opponentNickname: nickname,
+                isBlack: isHostFirst
             });
 
             logger.info(`매칭 성공: ${socket.id}(${playerRating}급) - ${matchedRoom.hostId}(${gameState.playerRating.get(matchedRoom.hostId)}급)`);